公开(公告)号：US20140231622A1

公开(公告)日：2014-08-21

申请号：US13773437

申请日：2013-02-21

Applicant: OmniVision Technologies, Inc.

Inventor： Duli Mao ,  Vincent Venezia ,  Gang Chen ,  Hsin-Chih Tai ,  Howard Rhodes

IPC: H04N5/335

CPC classification number: H04N5/3559 ,  H01L27/14601 ,  H04N5/355 ,  H04N5/52

Abstract: Techniques and mechanisms for a pixel array to provide a level of conversion gain. In an embodiment, the pixel array includes conversion gain control circuitry to be selectively configured at different times for different operational modes, each mode for implementing a respective conversion gain. The conversion gain control circuitry selectively provides switched coupling of the pixel cell to—and/or switched decoupling of the pixel cell from—a supply voltage. In another embodiment, the conversion gain control circuitry selectively provides switched coupling of the pixel cell to—and/or switched decoupling of the pixel cell from—sample and hold circuitry.

Abstract translation: 像素阵列的技术和机制提供一个转换增益水平。 在一个实施例中，像素阵列包括转换增益控制电路，以在不同的时间针对不同的操作模式进行选择性地配置，每个模式用于实现相应的转换增益。 转换增益控制电路选择性地提供像素单元与像素单元与电源电压的 - 和/或开关去耦合的切换耦合。 在另一个实施例中，转换增益控制电路选择性地提供像素单元与采样和保持电路的 - 和/或开关去耦合的切换耦合。